I think th OP is referring to the seperate feed pump that supplies tank water to th eskimmer.
What size tank is this going on? THe recommended flowthrough is 1.5-2 times you system volume per hour through the skimmer....However, If this is for you 125g system in your sig line the 110 is too small a skimmer!
Personally, I gravity feed my DNW110 directly from the overflow. If that is not an option, look at the microjet pumps...they are the same mfr as the maxijet, just really low flow.
No problem here....I run a HOB overflow that has 2 1" standpipes on it...1 standpipe is free flowing to the sump, the other standpipe runs to the skimmer with a valve to control flow. the water level above the standpipe that goes to the skimmer is at a constant level so the flow is constant.
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